The simplest structures that can carry out all of the activities characteristic of life are: A. cells

B. atoms

C. molecules

D. crystals.

Sperm pass through the and connect to a short ejaculatory duct. vas deferens prostrates seminiferous tubules none of the above

The means by which a cell transports large molecules out of the cell is called

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?